What this means
The IEEE assigned the MA-M block F490CB8 to Beijing Penslink Co., Ltd.. Every network interface they manufacture under this block has a MAC address beginning with these digits, followed by a unique per-device identifier. If a device on your network shows a MAC starting F4:90:CB:8, it is Beijing Penslink Co., Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix F490CB8?
F490CB8 is registered to Beijing Penslink Co., Ltd. in the IEEE MA-M registry.
What does the MA-M registry type mean?
An MA-M assignment covers 28 bits of the address, giving the vendor 1,048,576 device addresses, a quarter of a full MA-L block. Beijing Penslink Co., Ltd.'s block covers 1,048,576 addresses.
What devices use F490CB8?
Any network device with a MAC address starting F4:90:CB:8 was manufactured by or for Beijing Penslink Co., Ltd..